substantiateverb [ T ]
uk/səbˈstæn.ʃi.eɪt/us/səbˈstæn.ʃi.eɪt/formalto show something to be true, or to support a claim with facts:
We have evidence to substantiate the allegations against him.
Reports that children had been hurt have not been substantiated.
Thesaurus: synonyms and related words
Proving and disproving
- actions speak louder than words idiom
- attest
- authenticate
- back sb up
- bear witness (to sth) idiom
- belie
- catch
- colour
- do justice to yourself idiom
- documentary
- evidence
- explode
- explosion
- proof
- stick
- testament
- the acid test
- the burden of proof idiom
- undocumented
- unsubstantiated
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substantiation
noun [ U ] uk/səbˌstæn.ʃiˈeɪ.ʃən/us/səbˌstæn.ʃiˈeɪ.ʃən/formal
The company produced receipts in substantiation of (= to support) its claim.